Merge branch 'fork/caodachen/fix_useEcharts'

packages/effects/plugins/src/echarts/use-echarts.ts

@@ -116,6 +116,7 @@ function useEcharts(chartRef: Ref<EchartsUIType>) {
             chartInstance?.dispose();
             const instance = initCharts();
             if (!instance) return;
+            chartInstance = instance;
           }
           clear && chartInstance?.clear();
           chartInstance?.setOption(currentOptions);